| Message ID | 20220824155113.286730-6-jean-philippe@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | hw/arm/virt: Fix dt-schema warnings | expand |
On Wed, 24 Aug 2022 at 16:51, Jean-Philippe Brucker <jean-philippe@linaro.org> wrote: > > The compatible property of the Arm timer should contain either > "arm,armv7-timer" or "arm,armv8-timer", not both. > > timer: compatible: 'oneOf' conditional failed, one must be fixed: > ['arm,armv8-timer', 'arm,armv7-timer'] is too long > From schema: linux/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml > > Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> > --- > hw/arm/virt.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > index ca5d213895..5935f32a44 100644 > --- a/hw/arm/virt.c > +++ b/hw/arm/virt.c > @@ -344,7 +344,7 @@ static void fdt_add_timer_nodes(const VirtMachineState *vms) > > armcpu = ARM_CPU(qemu_get_cpu(0)); > if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { > - const char compat[] = "arm,armv8-timer\0arm,armv7-timer"; > + const char compat[] = "arm,armv8-timer"; > qemu_fdt_setprop(ms->fdt, "/timer", "compatible", > compat, sizeof(compat)); > } else { Are we really sure there are no existing guests out there that are looking for this device under "armv7-timer" ? This used to be valid DT before Linux kernel commit 4d2bb3e65035954, which changed from "should at least contain one of" to requiring exactly one-of, and that was only in 2018. thanks -- PMM
On Wed, Aug 24, 2022 at 08:40:21PM +0100, Peter Maydell wrote: > On Wed, 24 Aug 2022 at 16:51, Jean-Philippe Brucker > <jean-philippe@linaro.org> wrote: > > > > The compatible property of the Arm timer should contain either > > "arm,armv7-timer" or "arm,armv8-timer", not both. > > > > timer: compatible: 'oneOf' conditional failed, one must be fixed: > > ['arm,armv8-timer', 'arm,armv7-timer'] is too long > > From schema: linux/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml > > > > Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> > > --- > > hw/arm/virt.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > > index ca5d213895..5935f32a44 100644 > > --- a/hw/arm/virt.c > > +++ b/hw/arm/virt.c > > @@ -344,7 +344,7 @@ static void fdt_add_timer_nodes(const VirtMachineState *vms) > > > > armcpu = ARM_CPU(qemu_get_cpu(0)); > > if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { > > - const char compat[] = "arm,armv8-timer\0arm,armv7-timer"; > > + const char compat[] = "arm,armv8-timer"; > > qemu_fdt_setprop(ms->fdt, "/timer", "compatible", > > compat, sizeof(compat)); > > } else { > > Are we really sure there are no existing guests out there that are > looking for this device under "armv7-timer" ? It's highly unlikely. It would take for example a 32-bit Linux from before 2013 or a 32-bit FreeBSD from before 2015, running on a machine with ARM_FEATURE_V8. But I can't say for sure that no one is running such a config, so I'll ask about relaxing the binding. > > This used to be valid DT before Linux kernel commit 4d2bb3e65035954, > which changed from "should at least contain one of" to requiring > exactly one-of, and that was only in 2018. Yes the text bindings weren't always exact. Thanks, Jean
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index ca5d213895..5935f32a44 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -344,7 +344,7 @@ static void fdt_add_timer_nodes(const VirtMachineState *vms) armcpu = ARM_CPU(qemu_get_cpu(0)); if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { - const char compat[] = "arm,armv8-timer\0arm,armv7-timer"; + const char compat[] = "arm,armv8-timer"; qemu_fdt_setprop(ms->fdt, "/timer", "compatible", compat, sizeof(compat)); } else {
The compatible property of the Arm timer should contain either "arm,armv7-timer" or "arm,armv8-timer", not both. timer: compatible: 'oneOf' conditional failed, one must be fixed: ['arm,armv8-timer', 'arm,armv7-timer'] is too long From schema: linux/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> --- hw/arm/virt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)